JP6948594B2 - Fixed structure of vehicle battery - Google Patents

Description

The present invention relates to a fixed structure of a vehicle battery.

Vehicle batteries are widely used as a power source for starting an engine, lighting lights, and the like, from small vehicles to large vehicles. For example, a battery for a passenger car is stored and fixed in an engine room or under the floor of a trunk room. Therefore, even if a passenger car causes a collision, it is unlikely that the battery will pop out due to the impact of the collision.

On the other hand, the battery mounted on a vehicle such as a truck is mounted on the side of the vehicle body in a state of being exposed to some extent by the battery mounting device, unlike the battery for a passenger car. Therefore, the battery mounted on the truck needs to be fixed more firmly than the battery mounted on the passenger car.

As a method of fixing the battery mounted on the truck, for example, the structure disclosed in Patent Document 1 is known. In this structure, the battery is placed on a bracket fixed to the chassis frame and fixed by a tightening metal fitting from above to prevent the battery from falling off and popping out.

Japanese Unexamined Patent Publication No. 2000-315484

Considering the attachment / detachment work such as during battery maintenance, it is desirable that the battery box has internal dimensions having a certain margin with respect to the external dimensions of the battery. However, if the internal dimensions of the battery box are increased in order to improve the workability of the maintenance, the gap formed between the side surfaces of the battery (outer surfaces on the front, back, left, and right) and the inner wall surface of the battery box becomes large.

Further, when one battery box is intended to correspond to the standards of battery sizes of a plurality of sizes, the gap becomes large in the battery having a small size among the batteries having the external dimensions that can be accommodated. It ends up.

Since the battery of a vehicle is a heavy object having a large external dimension, the inertial force also increases in the event of a vehicle collision. As a result, if the gap between the front and rear of the battery is large among the gaps, the battery moves significantly in the front-rear direction of the vehicle at the time of a vehicle collision, and the battery falls off or the battery collides with the inner wall surface of the battery box and jumps up. there is a possibility. Therefore, when the front, rear, left, and right gaps of the battery are large, it is necessary to increase the tightening force in the vertical direction of the vehicle by using a band for fixing the battery. It may not be possible to fix it stably against a load.

The present invention has been made to solve the above problems, and an object of the present invention is to strengthen the fixing of the battery even when the gap between the inner wall surface of the battery box accommodating the battery and the battery is large. To be able to do it.

In order to achieve the above object, the vehicle battery fixing structure according to the present invention is provided on the side surface of a side frame arranged on both sides in the vehicle width direction at the lower part of the vehicle and extending in the vehicle front-rear direction, and the battery is placed on the bottom surface. The battery box has a battery box and a band for fixing the battery to the battery box, and the battery box has a front wall extending from the front part of the bottom surface to the upper part of the vehicle and a rear portion of the bottom surface. It has a rear wall that extends above the vehicle. In the fixed structure of the vehicle battery, the battery has a vertical wall surface at at least one of the front end portion and the rear end portion, and the battery box is provided on the inner wall surface of at least one of the front wall and the rear wall in the vehicle front-rear direction. A stopper member bulging toward the middle portion of the battery is provided, the stopper member has a flat surface portion facing the vertical wall surface of the battery, and the stopper member is joined to the inner wall surface. The battery has a flange portion, the flat surface portion bulges with respect to the flange portion, an L-shaped hook is locked between the flat surface portion and the inner wall surface, and the battery is attached by the band attached via the L-shaped hook. Is fixed .

According to the present invention, the fixing of the battery can be strengthened even when the gap between the inner wall surface of the battery box accommodating the battery and the battery is large.

It is a body side view of the truck which has the fixed structure of the vehicle battery which concerns on this invention. It is an enlarged side view which enlarged the battery box of FIG. 1 and the peripheral area around it. It is an enlarged side view which shows the state which removed the cover of FIG. It is an enlarged side view which shows the state which removed the band of FIG. FIG. 3 is a top view of the vehicle as viewed from above.

Hereinafter, the fixed structure of the vehicle battery according to the present invention will be described with reference to the drawings (FIGS. 1 to 5).

The vehicle battery fixing structure of the present embodiment is a structure for fixing the battery 1 mounted on the battery box 10 attached to the side frame 7, and for fixing the battery 1 in the battery box 10. A band 30, a front stopper member 21 and a rear stopper member 25 for restricting the movement of the battery 1 are attached.

As shown in FIGS. 1 and 2, the side frames 7 are highly rigid members that are arranged on both sides in the vehicle width direction and extend in the vehicle front-rear direction to form a vehicle body skeleton. The side frame 7 of this example has a side surface facing the outside in the vehicle width direction, and the battery box 10 is joined to the side surface by welding. In this example, the battery box 10 is located in a high-rigidity region near the joint between the side frame 7 and the suspension bracket 8 at the bottom of the truck bed 9.

As shown in FIGS. 3 and 4, the battery box 10 has a substantially rectangular parallelepiped box shape and is open above the vehicle and outward in the vehicle width direction. The battery box 10 has a bottom surface portion 12, a front wall 14 and a rear wall 15 arranged at intervals in the front-rear direction of the vehicle, and an inner side wall 16. A cover 18 is attached to the outer side of the battery box 10 in the vehicle width direction.

The bottom surface portion 12 has a substantially rectangular shape extending in the front-rear direction of the vehicle, and the battery 1 is placed on the bottom surface portion 12. The front wall 14 extends above the vehicle from the front of the bottom surface 12, and the rear wall 15 extends above the vehicle from the rear of the bottom surface 12. The inner side wall 16 extends upward from the inner side portion of the bottom surface portion 12 in the vehicle width direction.

The battery 1 of this example has a substantially rectangular parallelepiped shape having flat vertical wall surfaces 1a and 1b at the front portion and the rear portion. Although not shown, the positive electrode plate, the separate plate, the negative electrode plate, and the like are housed in the battery 1 filled with the electrolytic solution in a state of being immersed in the electrolytic solution. As shown in FIG. 5, the upper lid of the battery 1 is provided with a liquid spout 2 and, for example, a terminal 3 for taking out electricity. Further, a cable 4 for connecting to an electric device of a vehicle and supplying electricity is connected to the battery 1.

The battery 1 is mounted on the bottom surface 12 of the battery box 10 and fixed by the band 30. As shown in FIGS. 3 and 5, the band 30 is a member extending in the vehicle front-rear direction as a whole, and presses the upper pressing portion 31 that presses the upper surface of the battery 1 and the outer surface of the battery 1 in the vehicle width direction. It has an outer holding portion 32 and the like.

The upper holding portion 31 and the outer holding portion 32 are continuously connected by a connecting portion 34. The upper holding portion 31, the connecting portion 34, and the outer holding portion 32 are integrally formed. The connection portions 34 are arranged at intervals with respect to the battery 1. Further, as shown in FIG. 5, a central pressing portion 33 projecting inward in the vehicle width direction from the upper pressing portion 31 is integrally provided in the upper pressing portion 31 at the central portion in the vehicle front-rear direction of the upper pressing portion 31. ing.

The upper pressing portion 31 of the band 30 presses the outer portion of the upper surface of the battery 1 in the vehicle width direction from above the vehicle, and the outer pressing portion 32 presses the upper portion of the outer surface of the battery 1 in the vehicle width direction from the outer side to the inner side in the vehicle width direction. The central pressing portion 33 presses toward the center of the upper surface of the battery 1 in the vehicle front-rear direction from above the vehicle.

As shown in FIGS. 3 and 5, the front portion of the connection portion 34 in the band 30 is attached to the front wall 14 of the battery box 10 via the front L-shaped hook 37, and the rear portion of the connection portion 34 is the battery box. It is attached to the rear wall 15 of 10 via a rear L-shaped hook 38. The front L-shaped hook 37 is formed by bending one rod-shaped member at an acute angle, has a short portion and a long portion, and has a predetermined elastic force. Further, a screw portion 37a is provided at the tip of the long portion. The rear L-shaped hook 38 is formed in the same manner as the front L-shaped hook 37.

A through hole 14a is provided in the front wall 14 of the battery box 10, the short portion penetrates the through hole 14a and is locked, and the long portion has a mounting hole provided in the front portion of the connection portion 34. It penetrates and is fixed to the connecting portion 34 by screwing the nut 39 into the threaded portion 37a at the tip of the long portion. A through hole 15a is also provided in the rear wall 15 of the battery box 10, a short portion of the rear L-shaped hook 38 is locked to the through hole 15a, and a long portion of the threaded portion 38a is located at the rear of the connecting portion 34. It is fixed by a nut 39 through the provided mounting hole.

By tightening the nut 39 screwed into the long portion of the front L-shaped hook 37 and the nut 39 screwed into the long portion of the rear L-shaped hook 38, the band 30 becomes the battery 1. The battery 1 is fixed by contacting and generating a tightening force.

Subsequently, the front stopper member 21 will be described. As shown in FIG. 4, the front stopper member 21 is a member attached to the inner wall surface of the front wall 14 of the battery box 10. The front stopper member 21 extends in the vertical direction of the vehicle as a whole, and bulges rearward from the inner wall surface toward the center (intermediate portion) of the battery box 10 in the front-rear direction of the vehicle. As shown in FIG. 5, the front stopper member 21 has a front flat portion 22, two flange portions 23, and two side wall portions 24, which are integrally formed.

The two flange portions 23 are substantially rectangular flat portions that abut on the inner wall surface, are arranged at intervals in the vehicle width direction, and are arranged above the through holes 14a of the front wall 14. The side wall portion 24 is a flat plate-shaped portion that protrudes rearward of the vehicle from a side portion in which the two flange portions 23 are arranged so as to face each other. The front flat surface portion 22 is a flat plate-shaped portion connecting the two side wall portions 24. The front flat surface portion 22 faces the vertical wall surface 1a on the front side of the battery 1 at intervals.

In this example, the front stopper member 21 is formed by bending a flat plate formed of a metal material, and is formed so as to have a hat shape when viewed from above the vehicle. That is, the brim portion of the hat is the flange portion 23, and the top portion of the hat is the front flat portion 22. Further, the front stopper member 21 and the inner wall surface of the front wall 14 of the battery box 10 form a closed cross section to increase the rigidity.

Next, the rear stopper member 25 will be described. The rear stopper member 25 is a member attached to the inner wall surface of the rear wall 15 of the battery box 10. Like the front stopper member 21, the rear stopper member 25 extends in the vertical direction of the vehicle as a whole, and bulges forward from the inner wall surface toward the center (intermediate portion) of the battery box 10 in the vehicle front-rear direction. .. The rear stopper member 25 has a rear flat surface portion 26, two flange portions 27, and two side wall portions 28, which are integrally formed like the front stopper member 21. Further, the rear flat surface portion 26 faces the vertical wall surface 1b on the rear side of the battery 1 at intervals. Further, similarly to the front stopper member 21, a closed cross section is formed by the rear stopper member 25 and the inner wall surface of the rear wall 15 of the battery box 10 to increase the rigidity.

Further, the side wall 24 of the front stopper member 21 is arranged at a distance from the inner side surface 16 and the inner surface of the cover 18. Similarly, the side walls 28 of the rear stopper member 25 are arranged at intervals with respect to the inner surface 16 and the inner surface of the cover 18.

Further, the front flat portion 22 of the front stopper member 21 and the rear flat portion 26 of the rear stopper member 25 are arranged to face each other in the vehicle front-rear direction with the battery 1 interposed therebetween. That is, the positions of the front stopper member 21 and the rear stopper member 25 in the vehicle width direction are the same, and the positions of the front stopper member 21 and the rear stopper member 25 in the vehicle vertical direction are also arranged to be the same.

With this configuration, the gap between the inner wall surface of the front wall 14 of the battery box 10 accommodating the battery 1 and the vertical wall surface 1a on the front side of the battery 1 and the inner wall surface of the rear wall 15 of the battery box 10 And even when the gap between the vertical wall surface 1b on the rear side of the battery 1 is large, the fixing of the battery 1 can be strengthened.

As shown in FIG. 4, the upper end of the front stopper member 21 of the present embodiment is arranged above the vehicle vertical position of the center of gravity of the battery box 10. Similarly, the upper end of the rear stopper member 25 is arranged above the vehicle vertical position of the center of gravity of the battery box 10.

By arranging the front stopper member 21 and the rear stopper member 25 in this way, it is possible to further enhance the effect of restricting (constraining) the upper portion of the battery 1 and preventing the battery 1 from jumping up.

Further, the cover 18 of the present embodiment covers the outside of the battery box 10 in the vehicle width direction with the band 30, the front stopper member 21, and the rear stopper member 25 attached. As shown in FIG. 2, a recess 18a extending in the front-rear direction of the vehicle is formed in the central portion of the cover 18 in the vertical direction of the vehicle. A protector 40, which will be described later, is attached to the recess 18a.

The protector 40 has a long plate shape formed of a metal material extending in the front-rear direction of the vehicle, and has a flat surface facing the outside in the vehicle width direction. Further, the protector 40 is arranged inside the recess 18a of the cover 18 and connects the outer end portion of the front wall 14 in the vehicle width direction and the outer end portion of the rear wall 15 in the vehicle width direction.

As shown in FIGS. 3 and 4, a mounting portion 14b projecting from the front of the vehicle is provided at the outer end of the front wall 14 in the vehicle width direction, and the mounting portion 14b is mounted so as to penetrate in the vehicle width direction. The hole 14c is formed. Similarly, a mounting portion 15b projecting to the rear of the vehicle is provided at the outer end of the rear wall 15 in the vehicle width direction, and a mounting hole 15c penetrating in the vehicle width direction is formed in the mounting portion 15b. ..

The mounting portion 14b of the front wall 14 and the front portion of the protector 40 are fastened by bolts 43 and nuts 42, and the mounting portion 15b of the rear wall 15 and the rear portion of the protector 40 are also fastened by bolts 43 and nuts 42. There is. By attaching the protector 40, the deformation of the battery box 10 and the band 30 that occurs at the time of a collision is suppressed. Note that FIG. 5 shows a state in which the bolt 43 and the nut 42 are attached to the attachment portions 14b and 15b, and the cover 18 and the protector 40 shown in FIG. 2 are omitted.

Distortion of the battery box 10 can be prevented by pressing the outer side portion of the battery box 10 in the vehicle width direction with the protector 40. As a result, the bending of the band 30 can be suppressed, and further, the band 30 can be suppressed from coming off. Therefore, the effect of preventing the battery 1 from jumping up can be further enhanced.

The description of the present embodiment is an example for explaining the present invention, and does not limit the invention described in the claims. Further, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

In the present embodiment, the front stopper member 21 and the rear stopper member 25 are arranged before and after the battery 1, but the present invention is not limited to this. It may be attached to either one. Further, when the left and right gaps are large as well as the front and rear of the battery 1, stopper members may be arranged in the left and right gaps.

1 Battery 1a Front vertical wall surface 1b Rear vertical wall surface 2 Liquid spout 3 Terminal 4 Cable 7 Side frame 8 Suspension bracket 9 Loading platform 10 Battery box 12 Bottom part 14 Front wall 14a Through hole 14b Mounting part 14c Mounting hole 15 Rear wall 15a Through hole 15b Mounting part 15c Mounting hole 16 Inner side wall 18 Cover 18a Recess 21 Front side stopper member 22 Front side flat part 23 Flange part 24 Side wall part 25 Rear side stopper member 26 Rear side flat part 27 Flange part 28 Side wall part 30 Band 31 Upper side Presser 32 Outer presser 33 Central presser 34 Connection 37 Front L-shaped hook 37a Threaded 38 Rear L-shaped hook 38a Threaded 39 Nut 40 Protector

Claims (3)

A battery box is provided on the side surface of a side frame arranged on both sides in the vehicle width direction at the lower part of the vehicle and extending in the vehicle front-rear direction, and a battery is mounted on the bottom surface, and the battery is fixed to the battery box. With a band,
The battery box has a fixed structure of a vehicle battery having a front wall extending from the front part of the bottom surface to the upper part of the vehicle and a rear wall extending from the rear part of the bottom surface to the upper part of the vehicle.
The battery has a vertical wall surface at at least one of a front end portion and a rear end portion.
At least one inner wall surface of the front wall and the rear wall is provided with a stopper member that bulges toward the middle portion of the battery box in the vehicle front-rear direction.
The stopper member has a flat surface portion facing the vertical wall surface of the battery .
The stopper member has a flange portion to be joined to the inner wall surface, and the flat surface portion bulges with respect to the flange portion.
A vehicle battery fixing structure , wherein an L-shaped hook is locked between the flat surface portion and the inner wall surface, and the battery is fixed by the band attached via the L-shaped hook. The stopper member extends in the vertical direction of the vehicle and extends.
The vehicle battery fixing structure according to claim 1, wherein the upper end of the stopper member is arranged above the vehicle vertical position of the center of gravity of the battery box. 1. Item 2. The fixed structure of the vehicle battery according to item 2.

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